Should I be worried about wife's messages to other guys?

[Michael]

My wife uses a similar site to facebook which encourages people to communicate with others from around the world. Recently she has started using the site more often than normal and at one point left her account logged in.

I don't excuse my actions but I looked through some of the messages and they were from a few guys that she had messaged first, there was nothing bad or threatening to our relationship in the messages, however, when I asked why she used the site more often now she replied that I shouldn't worry and that she only communicates with girls there.

I'm just wondering although the messages aren't flirty in any way should I be worried that she said she only messages girls? and what should I do?

I have no problem with my wife messaging other guys but I don't think the fact that she lyed about who she messages.